Ok thanks to everyone for their responses. My 1911 & my daughter's boyfriends 1911 will be used a lot for woods / adventure walks so distances anywhere from 20 - 100 yards. Now I'm considering just getting all new brass ( probably Hornady) I'm not exactly sure what projectiles I'll be using but I know it will be something from Acme bullets & will have Hi-tech coating. I load my 357 with bullseye so I'd like to find a load with it. I will either be using Lee or Dillon dies.
Gary: I load .45ACP for 7 pistols: 6 are 1911s ranging from a Clark Hardball built in 1962 on a late '50s Colt Govt. to a Bunker Arms full custom build in 2016, and a CZ 97BE Custom built for me in 2014. All 7 shoot the same ammo and all is either based on a 200gr or 185gr SWC Hi-Tek coated bullet. I have used them from Falcon, Blue Bullets, Missouri Bullets, Bayou, and, currently, the Acme "No Lube Groove versions. Ideally, I would tune a round for each pistol, just like we do for our rifles, but that isn't practical. You are loading for at least two different 1911s so, like me, you need to find a round that will function reliably in both.
The function of any loaded round in your 1911s will, to some extent, be dependent on the weight of the mainspring and recoil springs in the guns. Mine are all fitted with a 19# mainspring and 16# recoil spring and I use Wolff springs in all my guns. The CZ is set with light springs too. Some factory guns will come with 23# mainsprings and 18 - 18.5# recoil springs and this may affect functioning, but springs are cheap and easy to change.
You mention using Bullseye powder, it is very accurate in .45ACPs and one of my favorites. That, along with VVN310, are the two primary powders I use for .45ACP. I have loaded and shot many pounds of each and at the 4.0gr. load I use (approx. 1750 rounds/ pound) that's a lot of rounds. I use random, range pickup brass......anything that isn't split, steel, or aluminum case, gets cleaned and loaded. I don't presort between large and small primers. If I get a small primer when I go to load, I just put it aside and save it to use when I am going to an outdoor training session where I may not find all my brass. It all works for me. You mention shooting in the woods.....a 1911 will throw brass 8-10 feet, to the right and behind the shooter if properly tuned, and you will loose a lot of brass unless shooting in a fairly open area and, for that reason, I would seriously consider buying "once fired" brass for your purposes.
I use Redding Competition Die sets for all my pistol reloading. Seating and crimping are done on separate stations. Some have recommended you buy a case gauge and, while it will work, the true test is the barrels of the guns you are loading for. The rounds I load run in all 7 of my guns and you need to find a load, both in power and dimensionally, that will work in the guns you are loading for unless you decide to load for each gun separately.
You will see a lot of comments about OAL of the round being important and, to an extent it is. However, with the SWC bullets you want to use, what is more important is the length from the base of the case to the exposed shoulder of the bullet as that length really determines whether the pistol will go into battery when the round is cycled. I find that a measurement of between .940-.950 works in all my guns. I see slight differences because of the differences in thickness of the base of the cases. For crimp, mine run between .469-.470, with slight variances due to different case thickness at the mouth. Here is a photo of an Acme 185gr SWC to illustrate the measurement. A Test Target from my Bunker Arms Custom is also attached showing that my loads are pretty decent at 25 yards. This was some of my older ammo (pre Hi-Tek) that I gave to Brandan when he needed to function test my gun and it was shot after about 40 rounds had gone through the gun. My reloads are all this gun has shot so, while you may read about 1911s needing a 500 round break-in with 230gr hardball rounds, that just isn't true.
Also, before you load any live rounds, I would suggest you load some "Dummy" rounds with no primer or powder and hand cycle them through the guns. If you have tested them in the barrels, they should feed from the mags too when you hand cycle. Once they cycle and the guns go into battery OK, then do live rounds.